Every Trailer Type You Need to Know in 2026
Choosing the wrong trailer wastes money and risks cargo damage. This guide covers every major trailer type, dimensions, weight limits, and ideal use cases so you can match your freight to the right equipment every time.
Enclosed Trailers
Dry Van (53')
The workhorse of American freight — roughly 70% of all FTL shipments move in dry vans.
| Spec | Detail |
|---|---|
| Interior Length | 53 ft |
| Interior Width | 8 ft 2 in |
| Interior Height | 9 ft (110 in) |
| Max Payload | 44,000–45,000 lbs |
| Door Type | Swing or roll-up rear |
| Floor | Hardwood or composite |
Best for: Palletized goods, boxed products, consumer goods, non-perishable food, electronics, paper products, retail inventory.
Limitations: No top or side loading; freight must fit through rear doors. No climate control.
Reefer (Refrigerated Trailer)
Temperature-controlled dry van with a diesel-powered refrigeration unit.
| Spec | Detail |
|---|---|
| Interior Length | 53 ft |
| Temperature Range | −20°F to +80°F |
| Max Payload | 42,000–43,500 lbs |
| Fuel Consumption | 0.8–1.2 gal/hr |
Best for: Produce, dairy, meat, pharmaceuticals, chemicals requiring temperature control, frozen foods.
Note: Reefer loads weigh less due to the refrigeration unit (~1,500 lbs). Continuous temperature monitoring is standard.
Open-Deck Trailers
Open-deck trailers are used for oversized, heavy, or oddly shaped freight that cannot fit inside an enclosed trailer.
Standard Flatbed
The most common open-deck trailer. Flat steel or aluminum deck with no sides, roof, or walls.
| Spec | Detail |
|---|---|
| Deck Length | 48–53 ft |
| Deck Width | 8 ft 6 in |
| Deck Height | 60 in (5 ft) from ground |
| Max Payload | 48,000 lbs |
| Max Legal Height | 8 ft 6 in above deck (13'6" total) |
Best for: Lumber, steel coils & beams, construction materials, heavy machinery, pipe, pre-cast concrete, military equipment, large crates.
Loading: Top, side, or rear — maximum flexibility. Requires tarping for weather-sensitive cargo (shipper or carrier responsibility varies by agreement).
Step Deck (Drop Deck)
A flatbed with two deck levels — a higher front section and a lower rear section. The "step" provides extra vertical clearance.
| Spec | Detail |
|---|---|
| Upper Deck Length | 11–13 ft |
| Lower Deck Length | 37–40 ft |
| Upper Deck Height | 60 in from ground |
| Lower Deck Height | 34–38 in from ground |
| Max Payload | 48,000 lbs |
| Max Cargo Height (lower) | 10 ft above lower deck |
Best for: Tall machinery, large vehicles, farm equipment, industrial generators, tall crated goods that exceed flatbed height limits.
Key advantage: The lower deck allows cargo up to 10 ft tall while staying under the 13'6" legal height limit — almost 18 inches more than a standard flatbed.
RGN (Removable Gooseneck)
The RGN's gooseneck detaches so the front of the trailer lowers to the ground, creating a drive-on ramp. This is the go-to for self-propelled heavy equipment.
| Spec | Detail |
|---|---|
| Well Length | 29–37 ft |
| Well Height | 18–24 in from ground |
| Max Payload (3-axle) | 42,000 lbs |
| Max Payload (multi-axle) | 80,000–150,000+ lbs with permits |
| Max Cargo Height | ~11 ft 6 in above well |
Best for: Excavators, bulldozers, cranes, pavers, military vehicles, transformers, industrial turbines — anything that can drive onto the trailer or needs ultra-low deck height.
Permit loads: Multi-axle RGNs (7–13+ axles) handle super-heavy loads over 80,000 lbs with overweight/oversize permits, pilot cars, and route surveys.
Lowboy
Similar to an RGN but with a fixed gooseneck and the lowest deck height of any trailer. The deck drops between the front and rear axle groups.
| Spec | Detail |
|---|---|
| Well Length | 24–30 ft |
| Well Height | 18–22 in from ground |
| Max Payload | 40,000–80,000+ lbs |
| Max Cargo Height | ~12 ft above well |
Best for: The tallest and heaviest equipment — large excavators, haul trucks, mining equipment, industrial boilers, bridge beams.
Key difference from RGN: Lowboys have a fixed neck (no drive-on ramp), so cargo must be loaded by crane or forklift. The tradeoff is an even lower deck and often higher weight capacity.
Specialized Trailers
Conestoga (Curtainside Flatbed)
A flatbed with a retractable tarp system on rails — combines flatbed loading flexibility with enclosed protection.
Best for: Machinery that needs weather protection but requires side/top loading.
Double Drop
A three-level trailer: raised front, sunken well, raised rear. The deepest well of any non-lowboy trailer.
Best for: Extremely tall cargo that still needs more well length than an RGN provides.
Hotshot (40' Gooseneck)
Smaller trailer pulled by a heavy-duty pickup truck (Class 3–5) instead of a semi.
Best for: Partial loads, time-sensitive deliveries under 16,500 lbs, farm equipment, small machinery, construction materials on short notice.
Trailer Selection Quick Reference
| Cargo Type | Recommended Trailer |
|---|---|
| Palletized consumer goods | Dry Van |
| Frozen food / pharma | Reefer |
| Steel beams & lumber | Flatbed |
| Tall machinery (8–10 ft) | Step Deck |
| Self-propelled equipment | RGN |
| Ultra-heavy/tall loads | Lowboy |
| Liquid chemicals | Tanker |
| Temperature-sensitive liquids | ISO Tank |
| Partial heavy loads | Hotshot |
How to Choose the Right Trailer
- Measure your cargo — length, width, height, and weight
- Check legal limits — 13'6" height, 8'6" width, 80,000 lbs gross without permits
- Consider loading method — rear only (van), side/top (flatbed), drive-on (RGN)
- Factor in protection — weather exposure, securement requirements, tarping
- Get permits if needed — oversize/overweight loads require state-by-state permits and route planning
Need help selecting equipment? Request a quote from Indray Inc — we match your cargo to the right trailer every time.
